Super Mario Bros. was first released in 1985. Back then, games weren't designed on computers, using fancy 3D models. They were designed on paper, by men who ate nails for breakfast and wrestled bears after supper.

Nintendo has published a new interview on its website with the creative forces behind the classic NES game. To go with the often charming story of Super Mario Bros.' development are a range of original design documents, showing everything from the way flight would be programmed to the game's control setup to what the word would look like broken up into pixels.

Nintendo fans and amateur historians should check it out; once you get past all the old-timey back-slapping there's some interesting stuff, like how the team got around the NES' memory limitations, what the Super Mario Preservation Society is and what Shigeru Miyamoto looks like with a popped collar.